Trough

aallonpohja

(a long, narrow depression between waves or ridges)

kaukalo

(a long, narrow, open container for feeding animals)

kaukalo

(a long, narrow container open at the top)

kouru

(a gutter under the eaves of a building)

matalapaineen alue

(a linear atmospheric depression associated with a weather front)

pohja

(a long, narrow depression between waves or ridges)